/* 
 *  生成三角形
 */
/*
 * 块元素居中
 */
/*
 * 布局时常用的样式
 */
body {
  font-family: "微软雅黑";
}
a {
  color: black;
  text-decoration: none;
}
a:hover {
  color: red;
  text-decoration: underline;
}
.header {
  height: 80px;
  /*background: red;*/
  width: 1250px;
  margin: 0 auto;
}
.container {
  height: 700px;
  background: green;
  width: 1250px;
  margin: 0px auto;
}
.footer {
  height: 50px;
  background: cadetblue;
  width: 1250px;
  margin: 0 auto;
}
